초록 ▼

A method and apparatus for compressing and decompressing small amounts of image data, such as icon image data, is disclosed. The image data is transformed from RGB color space data to luminance and chrominance data. The chrominance data is then reduced by means of a thinning or averaging process. Ru

A method and apparatus for compressing and decompressing small amounts of image data, such as icon image data, is disclosed. The image data is transformed from RGB color space data to luminance and chrominance data. The chrominance data is then reduced by means of a thinning or averaging process. Run length encoding is performed on the luminance data and reduced chrominance data to compress for storage. The invention allows accurate and efficient storage and use of a small amount of compressed image data, particularly for continuous tone icons.

대표청구항 ▼

A method and apparatus for compressing and decompressing small amounts of image data, such as icon image data, is disclosed. The image data is transformed from RGB color space data to luminance and chrominance data. The chrominance data is then reduced by means of a thinning or averaging process. Ru

A method and apparatus for compressing and decompressing small amounts of image data, such as icon image data, is disclosed. The image data is transformed from RGB color space data to luminance and chrominance data. The chrominance data is then reduced by means of a thinning or averaging process. Run length encoding is performed on the luminance data and reduced chrominance data to compress for storage. The invention allows accurate and efficient storage and use of a small amount of compressed image data, particularly for continuous tone icons. unications-a Tutorial Review-Part II," IEEE Communications Magazine, Oct., 1983, pp. 6-21. "Steganography," Intellectual Property and the National Informaiton Infrastructure The Report of the Working Group on Intellectual Property Rights, Sep. 1995, pp. 212-213. Tanaka et al., "Embedding Secret Information Into a Dithered Multi-Level Image," Proc. IEEE Military Comm. Conf., Sep. 1990, pp. 216-220. Tanaka, "Embedding the Attribute Information Into A Dithered Image," Systems and Computers in Japan, vol. 21, No. 7, 1990, pp. 43-50. Tirkel et al., "A To-dimensionsal Digital Wat